Puzzles

Here are a few puzzles:
Just copy and paste into your address bar:

http://www.conceptispuzzles.com/index.aspx?uri=puzzle/euid/010000005a1db74672929056d0bd4c5474d68bdf8b8d8d33cded9e435a6a3002fdad7dca6409d593b8515f2fb291a8786617b3ca/play

This will bea basic logic fill-a-pix.

Or do you like optical illusions? Try this site.
http://www.michaelbach.de/ot/index.html

But get your eyes ready!